{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-13wjb0bm","versions":[{"created_at":"2026-06-04T05:50:12Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"9dc76a17151e139a49393662c5c517ac0764be535b92b32b235c175d466e250f","version":10},{"created_at":"2026-06-04T04:52:42Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 74.9→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"183bccbbd493a7a9bbcd8edf68c22e191b973cfd7a69c02fd7c7ebb19c577b56","version":9},{"created_at":"2026-06-04T04:52:42Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"ca2161fdb6fea83592be824aa0ddda3211baf4ef4374cd941aca1994b3cdcbb7","version":8}]}